Detection and localization of illicit wireless communication in an exam room through passive signal reconnaissance
Typ
Examensarbete på kandidatnivå
Program
Publicerad
2021
Författare
Johansson, Martin
Joudah, Hussein
Holmberg, Emil
Simsek, Ömer
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
More and more of the examination on our universities are becoming digial. With
that comes challenges to maintain the secuirity of the exams and to keep it fair for
all students. In this project, the requirement was to develop a system for signal reconnaissance and detection of unauthorized transmitters and receivers. The system
uses a router setup on a local network, 4 PCs, where at least three have a wireless
network card that can be put into monitor mode. It also requires ethernet or a
second network interface on at least 3 of the PCs. The result is a prototype system
that can scan Wi-Fi 4 and 5 signals and then find the unauthorized signals within it.
The system estimates the position of the signal source. The system in it’s current
state can’t be built to cover more features such as Bluetooth or mobile networks.
The result of the system was mixed. The system in itself worked well, however the
calculated positions where not as accurate as aimed for. There are a number of
possible reasons for this, which is discussed in the discussion chapter. The testing
that was done could’ve been done more thoroughly. Without more solid testing it
is hard to say why the localization algoritm is giving bad values.